The Niacinamide Serum by The Inkey List is formulated with niacinamide, a popular skincare ingredient known for its oil-balancing and pore-minimizing properties. This serum helps to regulate sebum production, control oiliness, and improve the overall texture of the skin. It also has soothing and anti-inflammatory effects, making it suitable for acne-prone and sensitive skin. However, it is important to note that individual results may vary.